package com.wanxi.test;

//使用双循环输出正方形
public class Square {
    public static void main(String[] args) {
        for (int i = 1; i <= 4; i++) {

            for (int j = 1; j <= 5; j++) {

                System.out.print("*");

            }

            System.out.println();
        }

    }
}
